/*
 * Copyright © 2023 jsonwebtoken.io
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.jsonwebtoken.impl.io;

import io.jsonwebtoken.impl.lang.Bytes;

import java.io.ByteArrayInputStream;
import java.io.IOException;

/**
 * Allows read access to the internal byte array, avoiding the need copy/extract to a
 * {@link java.io.ByteArrayOutputStream}.
 *
 * @since 0.12.2
 */
public final class BytesInputStream extends ByteArrayInputStream {

    BytesInputStream(byte[] buf) {
        super(Bytes.isEmpty(buf) ? Bytes.EMPTY : buf);
    }

    public byte[] getBytes() {
        return this.buf;
    }

    @Override
    public void close() throws IOException {
        reset();
    }
}
